21386531320

Names of 21386531320

• Cardinal: 21386531320 can be written as Twenty-one billion, three hundred eighty-six million, five hundred thirty-one thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.138653132 × 10¹⁰

Factors of 21386531320

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2930

Divisors of 21386531320

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 20 22 28 35 37 40 44 55 56 67 70 74 77 88 110 134 140 148 154 185 220 259 268 280 296 308 335 370 385 407 440 469 518 536 616 670 737 740 770 814 938 1036 1295 1340 1474 1480 1540 1628 1876 2035 2072 2345 2479 2590 2680 2801 2849 2948 3080 3256 3685 3752 4070 4690 4958 5159 5180 5602 5698 5896 7370 8140 9380 9916 10318 10360 11204 11396 12395 14005 14245 14740 16280 17353 18760 19607 19832 20636 22408 22792 24790 25795 27269 28010 28490 29480 30811 34706 39214 41272 49580 51590 54538 56020 56980 61622 69412 78428 86765 98035 99160 103180 103637 109076 112040 113960 123244 136345 138824 154055 156856 173530 187667 190883 196070 206360 207274 215677 218152 246488 272690 308110 347060 375334 381766 392140 414548 431354 518185 545380 616220 694120 725459 750668 763532 784280 829096 862708 938335 954415 1036370 1078385 1090760 1140007 1232440 1313669 1450918 1501336 1527064 1725416 1876670 1908830 2064337 2072740 2156770 2280014 2627338 2901836 3627295 3753340 3817660 4128674 4145480 4313540 4560028 5254676 5700035 5803672 6568345 6943679 7254590 7506680 7635320 7980049 8257348 8627080 9120056 10321685 10509352 11400070 13136690 13887358 14450359 14509180 15960098 16514696 20643370 22800140 26273380 27774716 28900718 29018360 31920196 34718395 39900245 41286740 45600280 48605753 52546760 55549432 57801436 63840392 69436790 72251795 76380469 79800490 82573480 97211506 115602872 138873580 144503590 152760938 159600980 194423012 243028765 277747160 289007180 305521876 319201960 381902345 388846024 486057530 534663283 578014360 611043752 763804690 972115060 1069326566 1527609380 1944230120 2138653132 2673316415 3055218760 4277306264 5346632830 10693265660 21386531320
• Sum of all divisors σ(n): 62556779520
• Sum of proper divisors (its aliquot sum) s(n): 41170248200
• 21386531320 is an abundant number, because the sum of its proper divisors (41170248200) is greater than itself. Its abundance is 19783716880

Bases of 21386531320

• Binary: 10011111010101111001001000111111000₂
• Hexadecimal: 0x4FABC91F8
• Base-36: 9TOZL6G

Squares and roots of 21386531320

• 21386531320 squared (21386531320²) is 457383721901340942400
• 21386531320 cubed (21386531320³) is 9781851293701198014635915968000
• The square root of 21386531320 is 146241.3461371305
• The cube root of 21386531320 is 2775.7485228015

Scales and comparisons

• 21,386,531,320 seconds is equal to 680 years, 1 week, 2 days, 7 hours, 8 minutes, 40 seconds.
• To count from 1 to 21,386,531,320 would take you about one thousand, three hundred sixty years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21386531320 cubic inches would be around 231.3 feet tall.

Recreational maths with 21386531320

• 21386531320 backwards is 02313568312
• The number of decimal digits it has is: 11
• The sum of 21386531320's digits is 34
• More coming soon!